Over the past few decades, recommender systems have become an integral
part of internet businesses. In fact the use of recommenders has become
a necessity in industries such as e-commerce, streaming services and
online journalism.

The rankings of internet’s biggest companies are regularly dominated by
companies that are involved in the area of recommendations, whether for
website personalisation or by providing them as a service for other
businesses.
Amazon even attributes 35% of its sales directly to its recommendation
algorithms [1].

To expand on the preceeding talk, we will explore the recent progress in
the field, hybrid algorithms for recommendations and the use of
recommender systems in industry with the challenges connected to the
design of these systems.